Unit handled double row roller bearing



All@ 24 1948- A. L. BERGsTRoM Erm. l 2,447,838

UNIT. HANDLED DOUBLE ROW ROLLER BEARING Filed nay 1v, 1947 z'sneets-sner 1 l 21V-*r v/0 y FIG. l. l

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A118- 24, 1948 A. L. BERGs'rRoM Erm. l 2,447,833

man nAnnLnn nousLE now noLLsn BEARING- Filed may 17, A194'? v 2 sheets-sheet 2 F IG. 3.

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'Patented Aug. 1948 UNIT HANDLED DOUBLE ROW ROLLER BEARING y Albert L. Bergstrom and Harold D. Stover. Canton, Ohio, asslgnors to The Tlmken Roller Bearing Company, Canton, Ohio, a corporation of Ohio Application May 17, 1947, Serial No. 748,766

1o claims. l

This invention relates to roller bearings of the type comprising two axially spaced circular series of rollers, a single outer bearing for both series of rollers and a separate inner bearing member and a separate spacing cage for the rollers of each series. The invention has for-its principal object to provide a bearing of the above type that can be quickly and easily assembled and handled as a unit without the component parts becoming separated. Other objects are simplicity and cheapness of construction and compactness of design. The invention consists in the selfcontained cane type double row roller bearing and in the parts, combinations' and arrangements of parts hereinafter described and claimed.

in the accompanying drawing, which iornis part oi this speciiication and wherein like symbols refer to like parts wherever they occur,

Fig. l. is a central longitudinal sectional view et sell-contained double row roller bearing embodying my invention,

Fig'. 2 is a fragmentary cross-sectional view on the line 2-2 in Fig. l,

Fig. 3 is a fragmentary central longitudinal sectional view illustrating a modified form oi the invention,

` Fig. d is a cross-sectional View on the line l--ll in ille. 3,

Fie?. 5 is an end elevational view of the annular cage spacer member; and

Fia'. il is a sectional View on the line li-t in lilla. 5.

in the accompanying drawing, my invention is shown embodied in a cage type double row roller tapered roller bearing comprising a single outer bearing member or cup i having two axially spaced conical raceways 2 therein that taper toward the middle of thebearing, two separate cones or inner bearing members 3 having conical raceways d which taper towards each other, a circular series of conical rollers 5 interposed between the raceway of each inner bearing member and the corresponding raceway of the outer bearing member, and a separate spacing cage t for the rollers of each series.

The double cup l has integral internal peripheral thrust ribs l that are located at the large or outer ends of its raceways 2 and overlap thev corresponding end of the rollers 5 cooperatingof to provide an internal annular oil groove 9: and a plurality of radial oil grooves e in said y abutting ends of said cones are supplied with oil from said annular oil groove.

The spacing cage t for each series oi rollers comprises an annular body or end ring lll disposed opposite the inner ends thereof and piloted on the inner or small end of the cone l therefor, and a series of circumferentially spaced arms l that project from the outer-end ci said ring in conical formation and constitute the side walls of roller receiving pockets that are open at their outer or free ends. The pocket forming arms il of the cage t have their side surfaces curved to conform to the curvature of the rollers t; and the width oi the pockets at the inner periphery oi said arms is greater than the diameter of the rollers d so that the latter may be inserted in said pockets from the inside of said cage.

.es shown in the drawing, the' two cages t are mounted in the bearing with their end rings l@ back to back on small ends of the cones d and between the inner ends of the two series of rollers il and with their arms ll extending outwardly therebetween. The axial bores of the end rines l'it of the cages are counterbored at their outer ends to provide internal annular recesses l2 therein; and the inner ends of said bores are flared to form an internal annular oil groove lil adapted to receive oil from the radial oil grooves d in the abutting ends of the cones The axial bores of the cage rings it are also formed with circumierentially spaced longitudinal oil grooves lli for conveying 'the oil from the internal annular oil groove I3 to the interior of the bearing.

'Each ol. the cones 3 has an external annular groove l5 formed therein between the rollers 5y and cage ring it; and seated in said annular groove is a split snap-on retaining ring I6 that forms' on said cone an external peripheral rib that overlaps the inner ends of said rollers'and is accommodated in the annular recess l2 in the lbore of' saidcage ring. The retaining rings lli on the inner ends vof the cones 3 and the thrust ribs 1 at the outer ends of the single cup I serve to prevent axial separation oi the bearing parts in either direction,` thereby permitting the entire bearing assembly to be handled as a complete self-contained unit. The retaining rings also tend to normally hold the end rings I0 of the two roller spacing cages 6 back to back and clear of the inner ends of the rollers 5.

In assembling the above described bearing, one cage 6 is placed in one end of the cup I. one of accuse the snap rings IB is laid loosely in the annular l recess i2 in the outer end o! the axial bore of the end ring l of said cage and one series of rollers 3 are assembled in the pockets formed' spreading said ring and causing it to snap into the annular groove l5 provided therefor in said cone. The second series of rollers E, the second cage 6 and the second cone 8 are then assembled in the .other end of the cup l in a similar manner, the end ring of the second cage resting 'on the end ring of the rst cage during this assembling process. vIn operation the two cage rings ill rub against each other but are free of the snap rings lb.

The modied bearing construction shown in Figs. 3 to Gis similar to that shown in Figs. l. and 2 except that in the constructions shown in Figs. 3 to 6 the end rings iba of the two cages 6a are spaced apart axially by means of an annular spacer member l interposed therebetween and seating in the annular grooves lil provided therefor' in the opposing end faces of said en-d rings. This annular spacer member il has circumferentially spaced radial grooves it ind the end faces thereof. In this construction, the bearing is lubricated from the outside through a radial hole i9 in the cup i and the radial grooves i in the spacer member il serve to convey the oil to the raceway suriaces'of the cones 3. With this construction, after the first cage, snap ring, rollers and cone have been mounted in one end of the cup, the second cage is inserted in the other end of s aid cup with the annular spacer member Il interposed between the two cages and seated in the annular grooves in the opposing ends thereof, after which the second snap ring, rollers and cone are inserted in the order named.

What we claimeis:

1. A double row roller bearing comprising two axially spaced circular series of rollers, a single outer bearing member for both series of rollers,

-two inner bearing'mernbers, one for each series v of rollers, and two spacing cages, one for the rollers of each series, said spacing cages comprising annular members interposed between the 4 3. A double row taper roher bearing comprising two axially spaced circular series of rollers. a single outer bearing member for both series of rollers, two inner bearing members. one for each series of rollers. two spacing cages, one for the rollers of each series, said spacing cages comprising annular end members, interposed between two series of rollers and each having spacing arms extending between adjacent rollers, said outer bearing member having internal peripheral ribs .overlapping the outer ends of both series of rollers, and each of said inner bearing members having an external peripheral rib overlapping the inner ends of the rollers cooperating therewith, the whole forming a self-contained unit assembly.

2. A double row taper roller bearing comprising two axially spaced circular series of rollers, a single outer bearing member for both series of rollers, two inner bearing members, one for each series of rollers, and two spacing cages; one for the rollers of each series, said spacing cages comprising annular end members interposed vbetween the two series of rollers and each having spacing arms extending between adjacent rollers, said outer bearing member having integral internal peripheral thrust ribs overlapping the outer ends of said series of rollers, and each of said inner bearing members having an external peripheral retaining rib overlapping the inner ends of the rollers cooperating therewith, 'the whole forming a self-contained unit assembly.

the inner ends of the two'series of rollers and .each having spacing arms extending between adjacent rollers. said outer bearing member having integral internal peripheral end thrust ribs overlapping the outer ends of said series of rollers,

and a retaining ring mounted on each of said v inner bearing members in overlapping relation to the inner ends of the rollers cooperating therewith, the whole forming a self-contained unit assembly.

4. A double row taper roller bearing comprising two axially spaced circular series of rollers. a single outer bearing member for both series of rollers, two inner bearing members, one for each series of rollers, and two spacing cages, one4 for the rollers of each series, said spacing cages comprising annular end members disposed back to back between the two series oi rollers and having spacing arms extending from their remote end faces between adjacent rollers, said outer bearing member having integral internal peripheral ribs overlapping the outer ends of said series of rollers, and each of said inner bearing members having an external peripheral retaining rib interposed between the inner ends of the rollers cooperating therewith and the annular end member of the cage for said last mentioned rollers, the Whole forming a self-contained unit assembly.

5. A double row taper roller bearing comprising two axially spaced circular series of rollers, a single outer bearing member for both series of rollers. two inner bearing members, one for each series of rollers. two spacing cages. one for the rollers of each series, said spacing cages comprising annular end. members disposed back to back between the two series of rollers and having spacing arms extending from their remote end faces between adjacent rollers, said outer bearing member having integral internal peripheral ribs overlapping theouter ends of said series of rollers, and each of said inner bearing members having an external annular groove therein, and a split retaining, ring seated inthe annular groove of each of said inner bearing members in overlapping relation to the` inner ends of the series of rollers cooperating therewith, the whole forming a self-contained unit assembly.

6. A double row taper roller bearing comprising two axially spaced circular series of rollers, a single outer bearing member for both series of rollers, two inner bearing members, one for each series of rollers, two spacing cages. one for. the rollers of each series, said spacing cages 'comprising annular end members disposed back to back between the two series of rollers and having spacing arms extending from their remote end faces between acacent rollers. said outer bearing member having integral internal peripheral ribs overlapping the outer ends of said series of rollers, and each of said inner bearing members having an external annular groove therein, and a split retaining ring seated in the annular groove of each of said inner bearing members in overlapping relation to the inner ends of the series of rollers cooperating therewith and the annular end member of the cage for said last mentioned series of rollers, the whole forming a self-contained unitl assembly.

7. A double row taper roller bearing comprising two axially spaced circular series of rollers, a single outer bearing member for both series of rollers, two inner bearing members, one for each series of rollers, two spacing cages, one for the rollers of each series, said spacing cages comprising annular end members piloted on the inner bearing members between tne two series of rollers and having spacing arms extending from their remote end faces between adjacent rollers, said outer bearing member having integral internal peripheral ribs overlapping the outer ends of said series of rollers, and each of said inner bearing members having an external annular groove therein, and a split-retaining ring seated 'in the annular groove of each of said inner bearing with internal longitudinal oil grooves communieating with said annular oll groove.

9. A double row taper roller bearing comprising two axially spaced circular series of rollers, a single outer bearing member for both series of rollers, two inner bearing members. one for each series of rollers, two spacing cages, one for the rollers of each series. said spacing cages comprising annular end members piloted ln said outer bearing member between the two series of rollers thereon and having spacing arms extending from their remote end faces between adjacent rollers, said outer bearing member having integral internal peripheral ribs overlapping the outer ends of said series of rollers, and each of said inner bear ing members having an external peripheral retaining rlb interposed between the inner ends of the rollers cooperating therewith and the annular end member of the cage for said last mentioned rollers, and an annular spacer member interposed between said annular end members, the whole forming a self-contained unit assembly.

10. 'I'he combination set forth in claim 9 where in the opposinglend faces of said annular vend 

